Patents by Inventor Ralner Scharp

Ralner Scharp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multi-part piston for an internal combustion engine and method for its production
    Patent number: 8267005
    Abstract: The present invention relates to a multi-part piston (10) for an internal combustion engine, having an upper piston part (11) having a piston crown (13), and a lower piston part (12), whereby the lower piston part (12) has pin boss supports (32) and pin bosses (18) connected with them, whereby the upper piston part (11) and the lower piston part (12) each have an inner (21, 25) and an outer (22, 26) support element, which elements delimit an outer circumferential cooling channel (29). According to the invention, it is provided that the inner support elements (21, 25) delimit a cavity (31) that is open toward the pin bosses (18), and that the cavity (31) is provided with a separate cooling oil collector (35) that has at least one cooling oil opening (37, 38).
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: September 18, 2012
    Assignee: MAHLE International GmbH
    Inventors: Ralner Scharp, Klaus Keller, Volker Weisse